CVE-2021-3833Network attack vector

Unauthenticated login bypass via loose hash comparison

Published Oct 7, 2021 · Updated Sep 16, 2024

Incorrect authorization in Integria IMS 5.0.92 allows remote attackers to log in with different passwords via crafted password hashes. The login check compares the supplied password's MD5 hash to the database hash with PHP's loose equality operator, allowing specially formatted values to pass authentication. No prior account or user interaction is required; successful access can expose and alter application data and disrupt service.

CVSS severity9.8
Critical
EPSS probability1.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Integria IMS 5.0.92 allows remote attackers to log in with different passwords via crafted password hashes. The login check compares the supplied password's MD5 hash to the database hash with PHP's loose equality operator, allowing specially formatted values to pass authentication. No prior account or user interaction is required; successful access can expose and alter application data and disrupt service.

The record

CVE
CVE-2021-3833
Published
Oct 7, 2021
Updated
Sep 16, 2024
Vendor
Artica Tech
Product
Integria IMS
Classifications
CWE-697, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 7, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.0.92

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Artica Tech · Integria IMSversion=5.0.92

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8INCIBECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-697Incorrect Comparison
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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